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Full text of "Texas Instruments TI-92 Repair Manual"

Repairing Texas Instruments TI-92 Bacl< Case 



iiixit 



Repairing Texas Instruments TI-92 Back Case 



Tools used in this guide 

• Phillips #00 Screwdriver (1) 

• Plastic Opening Tools (1) 



In this guide we will be showing how to remove the Tl-92's back case to get to inner components. 



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Repairing Texas Instruments TI-92 Bacl< Case 




Step 1 - installation Back Cover 

• The first step to any repair operation is to 
remove the front cover. 



& 



• Grab the back of the calculator with one hand and the 
cover with the other. 

• Pull the cover off from one of the sides for easy 
removal. 




Step 2 

• Orientate the calculator with the top facing towards you. 

• Slide the locking tab,found on the top part of the 
calculator, to the unlock position. 



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Repairing Texas Instruments TI-92 Bacl< Case 




Step 3 

• "Locking Tab" 

• To remove the back cover, slide the cover away from 
the locking tab towards the bottom of the calculator until 
the cover no longer slides. 

• Then with the front of the calculator facing down, pull 
up on the back cover. 

• The calculator should now be orientated with the front 
facing down, as shown in picture 2. 




Step 4 - installation Batteries 

• The Batteries are now exposed and the 
calculator is face down with the back 
towards you. 



& 



• Remove the bottom batteries by pressing the battery 
towards you while pulling it out from the far end. 

• If you can not do the previous step with your 
finger try using a flat ended tool such as an 
Ipod opening tool. 



s 



• After the bottom battery has been removed push or 
slide the other(top) battery towards you until it is fully 
exposed in the battery slot. 

• Now simply remove the battery. 



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Repairing Texas Instruments TI-92 Bacl< Case 




Step 5 - Back Case 

• Using a Philips Screwdriver #00 unscrew the twelve 
1 1 .8mm screws shown in the picture and located on the 
back of the calculator. 




Step 6 

Unscrew the 19mm screw located near center of the 
back of the calculator. 

• Remove the panel being held by the screw. 



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Repairing Texas Instruments TI-92 Bacl< Case 




Step? 

• Using the same Phillips screwdriver, unscrew the 
remaining three 11.8mm screws. 




Steps 

• Using the Ipod Opening Tool pull up on both sides of 
the rectangular module while keeping the rest of the 
calculator flat on a surface face down 



You may get a lot of resistance from the 
module. Do not use too much force as you 
risk damage. Use small amounts offeree to 
work the module out. 



A 



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Repairing Texas Instruments TI-92 Bacl< Case 




Step 9 

• Pull out the rectangular module when it is finally loose 
enough. 




Step 10 

• Now pull up on the back cover of the calculator while 



holding the rest of it flat on a surface. 

Be careful not to tilt the front of the 
calculator at this point. The keyboard 
buttons are now unsupported and will fall 
out of place. 



A 



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Page 6 of 7 



Repairing Texas Instruments TI-92 Bacl< Case 



To reassemble your device, follow these instructions in reverse order. 



This document was last generated on Dec 14, 2010. 



© 2010 iFixit — CC BY-NC-SA www.iFixit.com Page 7 of 7